How many flushes do you need? One can't put a number on this ...when you have three flushes with no stones it is considered that your liver is emptied. Number 12 flush may produced no stones then number 13 may produce 500 stones and all your symptoms could alleviate or may not it could take 20 or 30 more there is no "number" to go by. You didn't get sick over night so a few flushes is not going to cure you.